76890984 divided by 531 
The aim is to understand the frequency of 531 in 76890984.

Advancing to step 1:
The number 531 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 531

Moving on to step 2:
The number 531 fits into 76 0 times, leaving a remainder of 76.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 76 leaves us with 76.
Bring next digit (8) of the dividend behind the 76 and repeat the process: 768 / 531

Advancing to step 3:
531 can be fit into 768 1 times, resulting in a remainder of 237.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 531 from 768, we get 237.
Include the next digit (9) from the dividend after 237, then repeat: 2379 / 531

Let's proceed to step 4:
531 can be fit into 2379 4 times, resulting in a remainder of 255.
The next digit of our result is 4. 
Result so far: 14.0
If we subtract 2124 from 2379, we get 255.
Include the next digit (0) from the dividend after 255, then repeat: 2550 / 531

On to step 5:
531 goes into 2550 4 times with a remainder of 426.
The next digit of our result is 4. 
Result so far: 144.0
The remainder is 426 after subtracting 2124 from 2550.
Bring next digit (9) of the dividend behind the 426 and repeat the process: 4269 / 531

Let's proceed to step 6:
531 goes into 4269 8 times with a remainder of 21.
Write down 8 as next digit of the result. 
Result so far: 1448.0
Deduct 4248 from 4269 and we're left with 21.
Fetch the next digit (8) from the dividend, attach it to 21 and continue: 218 / 531

Step 7:
218 divided by 531 is 0 with a remainder of 218.
Use 0 as the next digit of our solution. 
Result so far: 14480.0
The remainder is 218 after subtracting 0 from 218.
Append the next digit (4) from the dividend to 218 and continue with: 2184 / 531

On to step 8:
2184 divided by 531 is 4 with a remainder of 60.
Put 4 as the next digit of the answer. 
Result so far: 144804.0
Subtract 2124 from 2184 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 9:
531 goes into 600 1 times with a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 144804.1
The remainder is 69 after subtracting 531 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 10:
690 divided by 531 is 1 with a remainder of 159.
Write down 1 as next digit of the result. 
Result so far: 144804.11
If we subtract 531 from 690, we get 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

After the division, we end up with 144804.11 and a remainder of 0.159.